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CornerCursor

daredllama·CornerCursor·PCB/CornerCursor.kicad_pcb

CornerCursor PCB layout, top view — open source RP2040/RP2350 board by daredllama

About the CornerCursor PCB

CornerCursor is an open source RP2040/RP2350 PCB design by daredllama, published on GitHub. It is a 2-layer board measuring 102 × 42 mm, with 39 components from 21 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the PMW3360DM-T2QU, W25Q128JVS, TLV73333PDBVR and TCR2F19. By type, the board carries 20 capacitors, 7 resistors, 5 ICs, 4 switches, 2 connectors and 1 crystal.

It belongs with the sensors designs in this gallery.

From the project

A trackball mouse with a scroll ring that allows the user to edit CAD while sitting on the corner of their laptop.

A trackball mouse with 2 configurable buttons and a scroll ring. Made to be positioned on the corner of a laptop so that CADding is easier in any location.

Hardware created through Onshape. PCB made through KiCad. Firmware developed through VSCode.

- 3d printed case - Trackball navigation using PMW-3360 sensor - Scroll Ring using 40 magnets with Hall Effect sensors - 2 buttons - Firmware designed for CAD use in Onshape

CornerCursor, from the project README
From the project README

Main components on the CornerCursor

RP2040PMW3360DM-T2QUW25Q128JVSTLV73333PDBVRTCR2F19

CornerCursor bill of materials (BOM)

39 components, 21 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
RP2040
U1
1
PMW3360DM-T2QU
U2
1
W25Q128JVS
U3
1
TLV73333PDBVR
U4
1
TCR2F19
U5
1
ABM8-272-T3
X1
1
USB
J1
1
Header
J2
2
D2LS-2110M
SW1, SW2
1
BOOT
SW3
1
SW_Push
SW4
1
4.7u
C0
2
15p
C1, C3
1
100nF
C2
10
100n
C4, C10, C11, C13, C14, C15, C16, C17 +2
5
1u
C5, C6, C8, C9, C12
1
0.1u
C7
2
10k
R1, R3
2
1k
R2, R4
2
27.4
R5, R6
Show 1 more
QtyPartRefs
1
39R
R7

CornerCursor design files

The KiCad project lives in the daredllama/CornerCursor repository on GitHub; these links point at the commit this page was built from.

CornerCursor: common questions

What microcontroller does the CornerCursor use?

The CornerCursor is built around the RP2040, from the RP2040/RP2350 family.

How big is the CornerCursor PCB?

The CornerCursor measures 102 × 42 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the CornerCursor?

39 components, from 21 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the CornerCursor design files?

From the daredllama/CornerCursor repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the CornerCursor design in my own project?

The repository has no license, so all rights stay with daredllama. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the CornerCursor without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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